Measurement Computing Digital232 User Manual

Page 30

Section 3

Command Descriptions

3.8

Data received for output to the digital ports must be contained within a

prefix (D) and a suffix (Z). If the amount of data sent is less than the number of
bits programmed as outputs, the least-significant bits will contain the data sent
and the most-significant bits will be cleared to logic zero. If the data sent is
greater than the number of bits programmed for output or selected by the Pn
command, the Digital232 will generate a conflict error and ignore the entire
command string. The Data Strobe output is pulse for approximately 50
microseconds after new data is output on the selected port(s).

Example:

reset the Digital232

C2G2

configure ports 1 & 2 as output

D4E6BZ

output hexadecimal '4E6B' to ports 1 & 2

read data from the Digital232
display shows 4E6B

F1 Format - ASCII Character

In the F1 format, the data is coded and transmitted in ASCII Characters

with the four least significant bits of each ASCII character representing four
bits of data.

F1 Character Decimal Equiv F1 Character Decimal Equiv

;